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• Chikungunya virus disease became a nationally notifiable condition in 2015. Cases are reported to CDC by state and local health departments using standard case definitions.

• As of September 6, 2016, a total of 67 chikungunya virus disease cases with illness onset in 2016 have been reported to ArboNET from 26 U.S. states (Table & Map). All reported cases occurred in travelers returning from affected areas. No locally-transmitted cases have been reported from U.S. states.

• A total of 107 chikungunya virus disease cases with illness onset in 2016 have been reported to ArboNET from U.S. territories (Table). To date, 106 locally acquired cases and 1 travel-associated case have been reported from Puerto Rico.

• Table. Laboratory-confirmed chikungunya virus disease cases reported to ArboNET by state or territory— United States, 2016 (as of September 6, 2016)

2016 provisional data for the United States : • Chikungunya virus disease became a nationally notifiable condition in 2015. Cases are reported to CDC by state and local health departments using standard case definitions. : • As of September 20, 2...

2016 provisional data for the United States : • Chikungunya virus disease became a nationally notifiable condition in 2015. Cases are reported to CDC by state and local health departments using standard case definitions. : • As of September 27, 2...

2015 provisional data for the United States : • In 2015, chikungunya virus disease became a nationally notifiable condition. Cases are reported to CDC by state and local health departments using standard case definitions. : • As of September 29, ...

2015 provisional data for the United States : • In 2015, chikungunya virus disease became a nationally notifiable condition. Cases are reported to CDC by state and local health departments using standard case definitions. : • As of September 22, ...

2015 provisional data for the United States : • In 2015, chikungunya virus disease became a nationally notifiable condition. Cases are reported to CDC by state and local health departments using standard case definitions. : • As of September 1, 2...